After an uninspired performance against South Africa’s Sundowns where they lost 1-0, Ulsan produced a much-improved show against Brazil’s Fluminense of Brazil in the second match.

Kim Pan-gon’s side came back from conceding to lead 2-1 at half-time but could not sustain their control after the interval, eventually losing 4-2 to end their knockout stage hopes.

Winger Um Won-sang, who was one of their scorers against the Brazilian side, picked up a shoulder injury following a heavy collision with goalkeeper Fabio and is doubtful for the Dortmund match.

With their domestic season ongoing, Kim Young-gwon is adamant that Ulsan will not take the Dortmund match any differently with positive momentum a priority for the seasoned defender.

"The result of the Dortmund match will have an impact on the K-League and the Korea Cup,” said Kim. “If we focus on the remaining matches, prepare well, and play well, it will have a positive effect on our team this season."

Dortmund remain in the hunt for a place in the Round of 16 as they sit in second place behind Fluminense with an inferior goal difference but more importantly, are a point ahead of Sundowns.

Having just narrowly edged Sundowns in a seven-goal thriller on Saturday, head coach Nico Kovac will be demanding more from his players against Ulsan with Jobe Bellingham and Serhou Guirassy looking to add to their goals tally.

Venue: TQL Stadium (Cincinnati)

Kick-off: Wednesday, 15:00 (UTC-4)